diff --git a/src/Modules/CalcDefence.lua b/src/Modules/CalcDefence.lua
index 74b9583b07..09ef83a274 100644
--- a/src/Modules/CalcDefence.lua
+++ b/src/Modules/CalcDefence.lua
@@ -513,47 +513,50 @@ function calcs.resistances(actor)
 	output["PhysicalResist"] = 0
 	
 	-- Process Resistance conversion mods
-	for _, resFrom in ipairs(resistTypeList) do
-		local maxRes
-		for _, resTo in ipairs(resistTypeList) do
-			local conversionRate = modDB:Sum("BASE", nil, resFrom.."MaxResConvertTo"..resTo) / 100
-			if conversionRate ~= 0 then
-				if not maxRes then
-					maxRes = 0
-					for _, mod in ipairs(modDB:Tabulate("BASE", nil, resFrom.."ResistMax")) do
-						if mod.mod.source ~= "Base" then
-							maxRes = maxRes + mod.value
+	if not actor.resistConversionApplied then
+		actor.resistConversionApplied = true
+		for _, resFrom in ipairs(resistTypeList) do
+			local maxRes
+			for _, resTo in ipairs(resistTypeList) do
+				local conversionRate = modDB:Sum("BASE", nil, resFrom.."MaxResConvertTo"..resTo) / 100
+				if conversionRate ~= 0 then
+					if not maxRes then
+						maxRes = 0
+						for _, mod in ipairs(modDB:Tabulate("BASE", nil, resFrom.."ResistMax")) do
+							if mod.mod.source ~= "Base" then
+								maxRes = maxRes + mod.value
+							end
 						end
 					end
-				end
-				if maxRes ~= 0 then
-					modDB:NewMod(resTo.."ResistMax", "BASE", maxRes * conversionRate, resFrom.." To "..resTo.." Max Resistance Conversion")
+					if maxRes ~= 0 then
+						modDB:NewMod(resTo.."ResistMax", "BASE", maxRes * conversionRate, resFrom.." To "..resTo.." Max Resistance Conversion")
+					end
 				end
 			end
 		end
-	end
-	
-	for _, resFrom in ipairs(resistTypeList) do
-		local res
-		for _, resTo in ipairs(resistTypeList) do
-			local conversionRate = modDB:Sum("BASE", nil, resFrom.."ResConvertTo"..resTo) / 100
-			if conversionRate ~= 0 then
-				if not res then
-					res = 0
-					for _, mod in ipairs(modDB:Tabulate("BASE", nil, resFrom.."Resist")) do
-						if mod.mod.source ~= "Base" then
-							res = res + mod.value
+
+		for _, resFrom in ipairs(resistTypeList) do
+			local res
+			for _, resTo in ipairs(resistTypeList) do
+				local conversionRate = modDB:Sum("BASE", nil, resFrom.."ResConvertTo"..resTo) / 100
+				if conversionRate ~= 0 then
+					if not res then
+						res = 0
+						for _, mod in ipairs(modDB:Tabulate("BASE", nil, resFrom.."Resist")) do
+							if mod.mod.source ~= "Base" then
+								res = res + mod.value
+							end
 						end
 					end
-				end
-				if res ~= 0 then
-					modDB:NewMod(resTo.."Resist", "BASE", res * conversionRate, resFrom.." To "..resTo.." Resistance Conversion")
-				end
-				for _, mod in ipairs(modDB:Tabulate("INC", nil, resFrom.."Resist")) do
-					modDB:NewMod(resTo.."Resist", "INC", mod.value * conversionRate, mod.mod.source)
-				end
-				for _, mod in ipairs(modDB:Tabulate("MORE", nil, resFrom.."Resist")) do
-					modDB:NewMod(resTo.."Resist", "MORE", mod.value * conversionRate, mod.mod.source)
+					if res ~= 0 then
+						modDB:NewMod(resTo.."Resist", "BASE", res * conversionRate, resFrom.." To "..resTo.." Resistance Conversion")
+					end
+					for _, mod in ipairs(modDB:Tabulate("INC", nil, resFrom.."Resist")) do
+						modDB:NewMod(resTo.."Resist", "INC", mod.value * conversionRate, mod.mod.source)
+					end
+					for _, mod in ipairs(modDB:Tabulate("MORE", nil, resFrom.."Resist")) do
+						modDB:NewMod(resTo.."Resist", "MORE", mod.value * conversionRate, mod.mod.source)
+					end
 				end
 			end
 		end